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Skinny Sweet Potato Fries (And They Get Crispy!)

The aroma of roasting sweet potatoes always takes me back to crisp autumn evenings. My grandmother, bless her heart, was a master of simple, comforting dishes. I remember her making sweet potato fries, not often because she was a stickler for healthy eating, but they were a special treat. She would make them for us grandkids, and the best part wasn’t just the taste, but the ritual of us all gathered around the kitchen table, peeling, chopping, and anticipating the warm, sweet, slightly caramelized goodness that would soon emerge from the oven. This recipe reminds me of her effortless approach to cooking – proof that you don’t need a laundry list of ingredients to create something truly delicious.

Recipe Overview

Prep Time: 35 minutes
Cook Time: 15 minutes
Total Time: 50 minutes
Servings: Varies, depending on sweet potato size
Yield: Enough to cover a rectangular baking sheet
Dietary Type: Vegan, Gluten-Free

Ingredients

3 medium sweet potatoes (or enough to cover a rectangular baking sheet when they’re cut up)
2 tablespoons cornstarch
2 tablespoons olive oil
Powdered sugar (optional)
Maple syrup (optional)

Equipment Needed

Large glass bowl
Large, reclosable plastic bag
Baking sheet

Instructions

Begin by preparing your sweet potatoes. You can peel them if you prefer a smoother fry, or leave the skins on for added nutrients and a slightly rustic texture. The choice is yours!
Now comes the crucial part: cutting the sweet potatoes. Aim for fries that are about 3/8 inch thick – about the size you might find at a fair or carnival. Consistency is key to even cooking.
Place the freshly cut fries in a large glass bowl and cover them completely with water. This soaking step is optional, but highly recommended. Soaking for at least 30 minutes (or even longer) helps draw out excess starch, resulting in a crispier final product.
While the fries are soaking, preheat your oven to 425°F (220°C). Ensuring the oven is fully preheated is essential for achieving that desirable crispy exterior.
In a large, reclosable plastic bag, add the cornstarch. This unassuming ingredient is the secret weapon for achieving that perfect crisp.
Drain the sweet potato fries thoroughly and pat them dry with paper towels. A little moisture is okay, but too much will hinder the cornstarch from properly adhering.
Add the fries to the bag containing the cornstarch. Close the bag securely and shake vigorously until the fries are evenly coated. Depending on the size of your bag and the number of fries, you might need to do this in batches.
Line a baking sheet with parchment paper for easy cleanup. Spread the cornstarch-coated fries out on the baking sheet.
Drizzle the fries with olive oil.
Using your hands, gently toss the fries until they are evenly coated with the olive oil, taking care not to knock off too much of the cornstarch coating.
Spread the fries out in a single layer on the baking sheet. Avoid overcrowding, as this will steam the fries rather than roasting them, resulting in a less crispy texture. If necessary, use two baking sheets.
Place the baking sheet in the preheated oven and bake for 15 minutes, or until the fries reach your desired level of crispiness. Keep a close eye on them, as oven temperatures can vary. You want them to be golden brown and slightly caramelized.
Once cooked, remove the fries from the oven and let them cool slightly.
If desired, dust with powdered sugar for a touch of sweetness and serve with maple syrup for dipping. These are also delicious with savory dipping sauces like aioli or sriracha mayo.

Expert Tips & Tricks

The Soaking Secret: Don’t skip the soaking step! It really does make a difference in the crispiness of the fries. If you have the time, soak them for even longer than 30 minutes.
Even Cuts Matter: Consistent fry thickness is crucial for even cooking.
Don’t Overcrowd: Overcrowding the baking sheet leads to soggy fries. Use two baking sheets if necessary to ensure a single layer.
Cornstarch Power: Cornstarch is key for crispiness. Make sure the fries are well-coated.
Oven Watch: Ovens vary! Keep a close eye on the fries during the last few minutes of baking to prevent burning.
Spice it Up: Get creative with seasonings! Add garlic powder, onion powder, smoked paprika, or a pinch of cayenne pepper to the cornstarch mixture for a flavor boost.

Serving & Storage Suggestions

These sweet potato fries are best served immediately, while they are still hot and crispy. They make a wonderful side dish to burgers, sandwiches, or grilled chicken. For an attractive presentation, arrange them in a small bowl or on a platter, garnished with a sprinkle of chopped fresh herbs like parsley or thyme.

Leftovers can be stored in an airtight container in the refrigerator for up to 2 days. To reheat, spread the fries out on a baking sheet and bake in a preheated oven at 350°F (175°C) for about 5-10 minutes, or until heated through and slightly crispy again. Microwaving is not recommended, as it will make the fries soggy.

Nutritional Information

Nutrient	Amount per Serving (estimated)	% Daily Value*
Calories	150 kcal	8%
Total Fat	5g	6%
Saturated Fat	0.5g	3%
Cholesterol	0mg	0%
Sodium	50mg	2%
Total Carbohydrate	25g	9%
Dietary Fiber	4g	14%
Sugars	6g
Protein	2g	4%
Vitamin A	709 mcg	79%
Vitamin C	6 mg	7%
Potassium	475 mg	10%

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs. These are estimates and can vary based on exact sweet potato size and oil used.

Variations & Substitutions

Spice it Up: Add a pinch of cayenne pepper or chili powder to the cornstarch for a spicy kick.
Herb Infusion: Toss the cooked fries with fresh herbs like rosemary, thyme, or parsley for added flavor.
Coconut Oil: Substitute coconut oil for olive oil for a slightly different flavor profile.
Different Sweetener: Instead of powdered sugar, try a drizzle of honey or agave nectar.
Air Fryer Option: For an even faster and potentially crispier result, try cooking these fries in an air fryer. Follow the same prep steps, then air fry at 400°F (200°C) for 10-12 minutes, shaking halfway through.

FAQs (Frequently Asked Questions)

Q: Can I use regular potatoes instead of sweet potatoes?
A: Yes, you can! The cooking time might need to be adjusted slightly. Regular potatoes might require a few extra minutes in the oven.

Q: What if I don’t have cornstarch?
A: Arrowroot powder or tapioca starch can be used as a substitute for cornstarch in this recipe.

Q: Can I make these ahead of time?
A: While best served immediately, you can prepare the sweet potatoes ahead of time by cutting them into fries and soaking them in water. Store them in the refrigerator until you’re ready to proceed with the recipe.

Q: How do I prevent the fries from sticking to the baking sheet?
A: Make sure to use parchment paper or a silicone baking mat to line your baking sheet. This will prevent sticking and make cleanup much easier.

Q: Why aren’t my fries getting crispy?
A: Common culprits include overcrowding the baking sheet, not using enough cornstarch, or not preheating the oven properly. Double-check these factors for optimal results.

Final Thoughts

These skinny sweet potato fries are a testament to the fact that healthy eating doesn’t have to be boring. With just a few simple ingredients and a little bit of effort, you can create a delicious and satisfying snack or side dish that everyone will love. Don’t be afraid to experiment with different seasonings and dipping sauces to find your perfect combination. I encourage you to give this recipe a try and share your feedback – happy cooking! These are perfect with a simple grilled chicken or a hearty black bean burger.

Skinny Sweet Potato Fries (And They Get Crispy!) Recipe